Most advice about Google Ads bidding assumes the account will grow into automation. Start with manual bids, collect conversions, switch to Smart Bidding, scale. For a lot of B2B companies, the middle step never arrives. The account produces a handful of good leads a month, every one of them worth real money, and never gets near the volume automated bidding is built for.
That isn't a problem to fix. It's a size of business. This chapter covers how to bid well in that situation, what to watch, and what changes if the account does grow past it. It builds on the exact match campaign from Chapter 6, which this chapter keeps bidding by hand.
83% of US Machine Shops Have Fewer Than 20 Employees. Thirty Quote Requests a Month Would Bury Most of Them.
Start with who's actually buying Google Ads in B2B. The Census Bureau's 2023 count of US businesses puts 17,156 locations in the machine shop category, and 83% of them have fewer than 20 employees. It's the same story across this guide's other business types: 84% of the 382,081 wholesale locations, and 91% of IT services locations, have fewer than 20 people.
Now put that next to the number our method uses to decide when automated bidding takes over: about 30 quality conversions a month. For a B2B account, a quality conversion is a qualified lead, the stage Chapter 1 set up. Modern Machine Shop's 2026 Top Shops benchmarking survey found that shops quoting within a day win 51% of new business, versus 41% for slower shops. At those rates, 30 qualified quote requests a month would turn into roughly 12 to 15 new jobs a month. For a shop with a dozen machinists, that's likely more new work than it could take on.
So many B2B accounts will live below that gate permanently, and they should. Chapter 3 set the budget from what the team can handle. If the team can handle eight qualified leads a month, an account that delivers eight good ones a month at a sensible cost is doing its job. The bidding approach should suit that account, not the one in the generic advice.
Google Says Target CPA Can Start With No History. Its Suggested Target Still Comes From Your Own Conversions.
Google's own position deserves a fair hearing. Its help page says Target CPA can be switched on before an account has recorded a single conversion, and that it works for campaigns of every size. Smart Bidding can also learn from conversions across the whole account, not just one campaign.
Yet when Google proposes a target number, it works it out from your account's own track record, averaging a month of real costs. And Google's general advice for judging a bid strategy is to wait for at least 30 conversions or a month, whichever takes longer. Since a change Google made on August 17, 2026, it also says budget-limited campaigns will aim to deliver close to the target rather than beat it, which makes a target set too high more expensive.
Here's our reasoning for staying manual in a small B2B account. When five qualified leads arrive in a month, one more or one fewer moves the cost per lead by roughly a sixth to a quarter. Automated bidding reacts to those swings. A person setting bids can see that a quiet week was a holiday, or that two leads came from one company, and leave the bids alone. Practitioners disagree on this: some say Smart Bidding is a must in B2B, even from month one; others keep small accounts on manual bids for good. We start manual and stay manual until the volume is there.
There's one narrow exception. If a new campaign gets almost no impressions, Maximize Clicks with a maximum cost per click can give it a short push to find its footing. We use it only as a kick-start, never as the strategy.
Hand-Set Bids Let a Quote Search Cost More Than a Product Search in the Same Account.
The first campaign, Isolation, uses manual cost-per-click bidding with bids set for each ad group. That's what makes the tight structure from Chapters 4 and 5 pay off: every ad group is one kind of search, so every bid can reflect what that search is worth.
In practice, the ad groups rank themselves:
- Quote searches ("injection molding quote," "cnc machining quote") get the highest bids. They're closest to a purchase order.
- Supplier searches ("fastener supplier," "managed it service provider") come next.
- Product searches ("custom injection molding," "pallet racking") get the lowest bids, if they run at all at launch.
Keyword Planner's top-of-page bid ranges from Chapter 2 give you a starting point for each group. Start near the top of the range. A brand-new account has no history at all. Paying for top positions early gets you the clicks and lead data you need to set bids with confidence. Then bring bids down as the account learns which groups produce qualified leads and at what cost.
Manual Bidding in a Small B2B Account Takes One Short Review a Week, Not a Full-Time Watch
Manual bidding sounds like constant work. Our routine for a small B2B account is a short weekly review.
Once a week, open the campaign at the ad group level with the last 30 days selected, so a single slow day doesn't drive a decision. For each ad group, look at three things together: how many qualified leads it produced, what each one cost, and its top impression share. Then we make small moves, a few percent up or down on the bid at a time.
- Leads coming in at a cost you're happy with, and top impression share low: raise the bid a little. You're leaving good searches on the table.
- Leads coming in, but costing more than the account can afford: lower the bid a little, or check whether a better ad and page from Chapter 4 can lower what you pay.
- Plenty of clicks, no qualified leads after a month: read the search terms and the calls before touching the bid. The problem is usually who's clicking, not how much you pay.
- Too few impressions to judge: leave it alone and wait. A B2B ad group with nine clicks this month isn't telling you anything yet.
Write down what you changed and why. In an account with a handful of leads a month, the notes are what let you tell a real trend from a coincidence three months later.
Showing Above the Results 80% of the Time on Your Best Searches Is a Strong B2B Target. Higher Usually Costs Too Much.
Manual bidding means reading the right numbers. Google's impression share columns answer two questions for each campaign and keyword. The first is how often your ad appeared in the strip of ads above the results, out of the times it was eligible: that's Search top IS, and its stricter sibling Search abs. top IS counts only the very first slot. The second is why it didn't appear when it could have. Google splits that into ads that sat out because their Ad Rank came up short, which points at the bid or at the ad and page, and ads that sat out because the day's budget was spent, which only the budget fixes. The budget split is only reported for whole campaigns, not single keywords.
On the keywords that matter most, usually the quote and supplier searches, we aim for about 80% top impression share, within a range of roughly 75% to 90%. In our experience, chasing the last few points above that costs more per click than it returns. And the right ceiling is lower if your team is already at capacity, because more top positions mean more leads.
Two other views earn a weekly look. Quality Score at the keyword level tells you which keywords need a better ad or page, as covered in Chapter 4. Auction insights shows which other advertisers appear alongside you and how often. If one auction keeps getting more expensive while the leads stay the same, step back from it.
Finally, listen to the calls. A bid that buys a top position for a search full of wrong-number and job-seeker calls is a bad bid, whatever the impression share says. The qualified-call stage from Chapter 1 is what tells you which ad groups deserve their bids.
Target CPA Should Start From the Cost per Lead Your Hand-Set Bids Already Proved.
Some B2B accounts will grow past the gate. Larger distributors, IT firms with several locations and manufacturers with national reach can reach about 30 qualified leads a month, typically two or three months in, sooner for bigger accounts, later for many small B2B accounts.
When that happens, the second campaign, Exploration, starts on Target CPA (labeled "Maximize conversions with a Target CPA" before June 2026). Base the target on Isolation's real results. Say hand-set bids have been landing qualified leads at roughly $140 apiece lately; the target opens at $140, even if $90 is the dream. A target set too low can make Google hold back and deliver fewer leads, and Google's August 2026 change means a campaign short on budget now aims to land close to whatever target you set.
Isolation keeps running beside it on manual bids. The two campaigns do different jobs, and the manual one remains your benchmark for what a qualified lead should cost.
Next: A B2B Ad That Names the Buyer and the Minimum Order Turns Away the Wrong Clicks
Chapter 8 covers ad copy, and how B2B ads can filter out the wrong people before they cost you a click. The full guide is on the Google Ads for B2B guide home, and if you'd rather have us manage the bids, see our Google Ads management.
